STRUCTURE AND PROPAGATION OF PREMIXED FLAMES IN A CLOSED COMBUSTION CHAMBER WITH MULTIPLE IGNITION SOURCES

被引：14

作者：

Hariharan, Ashwin ^{[1
]}

Wichman, Indrek S. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2015年 / 187卷 / 10期

关键词：

Constant volume combustion; Experimental combustion; Multiple ignition; Numerical simulation; Premixed flame; Transition phenomena; Tulip flame; TULIP FLAME; FLOW; FRONT; AIR;

D O I：

10.1080/00102202.2015.1050554

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work presents an experimental and numerical investigation of premixed flame propagation in a constant volume combustion chamber ignited by multiple sparks. The combustion chamber consists of an aluminum channel with an aspect ratio of six. Optical windows along the length of the channel enable visual imaging. Ignition is followed by an accelerating spherical flame front, which subsequently decelerates to form a "tulip"-shaped flame front. Eventually, this tulip flame is extinguished by collision with the opposing flame front ignited at the other end of the channel. Numerical simulations examine the influence of the flow field on the structure and morphology of the flame. The three-dimensional numerical simulation is compared with experimental results. An investigation of flame oscillations for various time delays between the two sparks is performed. The flow field is analyzed by using the corresponding numerical simulation.

引用

页码：1562 / 1583

页数：22

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